Denis St. Peter, CES president, said in a statement that the acquisition of Summit was “a tremendous addition” to the company’s capabilities.

“Even though we did not plan on selling the CMT division, this agreement allows CES to better focus on our core services and still accomplishes our goals of expanding our service area and improving our core services to our clients,” he said.

S.W. Cole will retain all of Summit CMT’s staff and move them to S.W. Cole’s offices in Augusta and Gray. The acquisition will bring S.W. Cole’s total staff to roughly 95 employees, according to a statement from Bob Chaput, S.W. Cole’s senior vice president.

S.W. Cole is a construction materials testing and geotechnical engineering services firm founded in 1979. It has seven branch offices, in Augusta, Caribou and Gray, Maine; Keene, Manchester and Somersworth, N.H.; and White River Junction, Vt.

CES is an engineering and surveying firm founded in 1978. It has more than 70 employees at six offices in Brewer, Lewiston, Machias, Presque Isle, Waterville and Bar Harbor.